NEW YORK -- These "Baby Bombers" just don't quit. Aaron Judge homered and delivered a game-tying hit, while Gary Sanchez crushed the go-ahead double in a decisive four-run eighth as the Yankees stunned the Astros with a 6-4 victory in Game 4 on Tuesday to even the American League Championship Series at two games apiece.

Trailing by four runs as they came to bat in the seventh inning, the Yankees rallied for six unanswered runs, ensuring the ALCS presented by Camping World will be completed in Houston. Judge started the comeback with his third homer of the postseason, a solo drive to Monument Park that chased starter Lance McCullers Jr., and Didi Gregorius greeted reliever Chris Devenski with a triple before scoring on a Sanchez sacrifice fly.

After Todd Frazier and Chase Headley opened the eighth with singles off Joe Musgrove, Brett Gardner knocked home the Yankees' third run with a grounder to the right side against closer Ken Giles. That set up Judge to tie the game by digging out an 86.2 mph slider, denting the left-field wall for a run-scoring double. Sanchez gave New York its first lead with a two-run double up the gap in right-center field.

Behind six dominant innings from McCullers and Yuli Gurriel's bases-clearing double, the Astros were poised to begin counting down outs, aiming to move one win from the second World Series appearance in franchise history. Instead, the Yankees remained undefeated at home this postseason heading into a crucial Game 5 showdown on Wednesday at Yankee Stadium. In best-of-seven LCS, teams that win Game 5 to go ahead 3-2 have gone on to win 13 of 16 times.

Yankees starter Sonny Gray matched McCullers before running into trouble in the sixth, charged with two runs (one earned) and one hit in five-plus frames. The Astros pushed their lead to four runs in the seventh when Starlin Castro committed his second error of the game, booting a Brian McCann ground ball on the outfield grass that allowed Marwin Gonzalez to score from second base.

MOMENTS THAT MATTERED
Yuli clears 'em: The Astros were 1-for-12 with the bases loaded in the playoffs prior to Gurriel's double. Houston loaded the bases with none out in the sixth without a base hit. Springer walked and Reddick reached on catcher's interference before Girardi lifted Gray in favor of Robertson. Altuve drew a walk and Robertson struck out Carlos Correa swinging before Gurriel's big hit.

Gary Sanchez lifts a go-ahead two-run double to right-center field, giving the Yankees a 6-4 lead in the 8th inning
Bullpen succumbs in eighth: Houston's bullpen couldn't provide any relief in the eighth, when the Yankees sent 10 batters to the plate to score four runs and take a 6-4 lead. Brought into the game with runners at second and third and none out, Giles allowed both inherited runners to score and gave up two more runs on Sanchez's double. The breakdown by the Astros was reminiscent of Game 4 in the 2015 AL Division Series against the Royals, in which Kansas City scored five times in the eighth to wipe out a four-run deficit and win the game against Houston's bullpen.